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基于大样地研究方法的辽宁西北部彰武县阿尔乡疏林地树种组成与群落结构

白雪娇1,2,钟博文1,魏亚伟1,2,秦胜金1,2,周永斌1,2,殷有1,2*#br#   

  1. 1沈阳农业大学林学院, 沈阳 110866; 2辽河平原森林生态站, 辽宁昌图 112518)
  • 出版日期:2016-09-10 发布日期:2016-09-10

Species composition and community structure of open forest land in Aerxiang of Zhangwu County in northwestern Liaoning Province based on large sample plot method.

BAI Xue-jiao1,2, ZHONG Bo-wen1, WEI Ya-wei1,2, QIN Sheng-jin1,2, ZHOU Yong-bin1,2, YIN You1,2*#br#   

  1. (1 College of Forestry, Shenyang Agricultural University, Shenyang 110866, China; 2 Research Station of LiaoheRiver Plain Forest Ecosystem, Chinese Forest Ecosystem Research Network, Changtu 112518, Liaoning, China).
  • Online:2016-09-10 Published:2016-09-10

摘要: 彰武县地处辽宁西北部科尔沁沙地南缘,其区域植被群落恢复与重建是研究的焦点。以往的研究因缺少群落个体的空间定位,无法准确描述群落物种的空间分布及动态变化。因此,本研究应用森林大样地监测方法,于2014年7月在彰武县阿尔乡建立了1块100 m×100 m的疏林地长期监测样地,对样地内所有胸径不小于1 cm的所有木本植物进行定位调查。结果表明:样地内物种数较少,共10个树种,分属于9科9属;样地内独立个体数为393,包含分枝的个体数为592;群落中优势树种明显,从重要值分析来看,山里红(Crataegus pinnatifida var. major)和加杨(Populus × canadensis)在群落中占有绝对优势(重要值分别为0.316、0.295);家榆(Ulmus pumila)和樟子松(Pinus sylvestris var. mongolica)在其中亦占有一定的比例(多度分别为47、26),更新较为良好;从物种的空间分布来看,主要树种除樟子松外并未表现出明显的聚集性分布,部分小乔木和灌木树种则表现出相对聚集性分布,但并没有表现出与地形明显的相关性。

关键词: 北方粳稻, 影响, 幼穗形成期, 低温处理, 空壳率

Abstract: Zhangwu County is located in the southern margin of Horqin sandy land in northwestern Liaoning Province. The restoration and reconstruction of vegetation communities in this area is the research focus. In this paper, a 100 m×100 m monitoring plot was established in July 2014 in the open forest land in Aerxiang, Zhangwu County, Liaoning Province by using the large plot forest monitoring method. All woody and lianas individuals with diameter at breast height above 1 cm were investigated. The results showed that the number of species in this open forest land was less than that of the montane region of eastern Liaoning, totaling 10 species, belonging to 9 families 9 genera. The number of independent individuals was 393, and the number of individuals was 592 in the monitoring plot. Crataegus pinnatifida var. majo r and Populus × canadensis were dominant species according to importance value (0.316 and 0.295, respectively). Ulmus pumila and Pinus sylvestris var. mongolica occupied a certain proportion in this open forest land (with abundance of 47 and 26, respectively), and their regeneration was good. From the spatial distribution of species, the main tree species in forest except for P. sylvestris var. mongolica did not exhibit obvious aggregated distribution pattern; some small trees and shrubs or vines exhibited relatively aggregated distribution pattern, but did not exhibit a clear correlation with terrain.

Key words: north japonica, young ear formation period, low temperature treatment, shell rate, influence.